The document discusses key concepts and events related to European imperialism between the 1800s-1900s. It provides definitions of imperialism, colony, protectorate, and spheres of influence. It also outlines three potential motives for imperialism: exploratory, political, and economic gains. Specific examples of European colonization discussed include King Leopold II's brutal rule over the Congo as a personal colony, the Berlin Conference dividing up Africa, and the Opium Wars between Britain and China.